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Determination and potential importance of diterpene (kaur-16-ene) emitted from dominant coniferous trees in Japan |
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| Authors: | Matsunaga Sou N Chatani Satoru Nakatsuka Seiji Kusumoto Dai Kubota Katsuyoshi Utsumi Yasuhiro Enoki Tsutomu Tani Akira Hiura Tsutom |
| Institution: | a Auto Oil and New Fuels Department, Japan Petroleum Energy Center, 4-3-9 Toranomon, Minato-Ku, Tokyo 105-0001, Japan b Toyota Central R&D Laboratories Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan c The University of Tokyo Tanashi Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-8 Midorimachi, Nishi-Tokyo, Tokyo 188-0002, Japan d Shiiba Research Forest, Kyushu University, 949 Okawachi, Shiiba, Higashi-Usuki, Miyazaki 883-0402, Japan e Institute for Environmental Science, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka 422-8526, Japan f Tomakomai Research Station, Field Science Center for Northern Biosphere, Hokkaido University, Takaoka, Tomakomai, Hokkaido 053-0035, Japan |
| Abstract: | Reactive volatile organic compounds (VOCs) are known to affect atmospheric chemistry. Biogenic VOCs (BVOCs) have a significant impact on regional air quality due to their large emission rates and high reactivities. Diterpenes (most particularly, kaur-16-ene) were detected in all of the 205 enclosure air samples collected over multiple seasons at two different sites from Cryptomeria japonica and Chamaecyparis obtusa trees, the dominant coniferous trees in Japan,. The emission rate of kaur-16-ene, was determined to be from 0.01 to 7.1 μg dwg−1 h−1 (average: 0.61 μg dwg−1 h−1) employing branch enclosure measurements using adsorbent sampling followed by solid phase-liquid extraction techniques. The emission rate was comparable to that of monoterpenes, which is known major BVOC emissions, collected from the same branches. In addition, total emission of kaur-16-ene at 30 °C was estimated to exceed that of total anthropogenic VOC emissions. |
| Keywords: | Biogenic volatile organic compound Kaur-16-ene Coniferous tree Biogenic emission Atmosphere Diterpene |
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